Nut-lock.



H. GHESHER.

NUT Loox.

t i APPLICATION FILED DEO. 24, '1912. I 1933,@19 Eate'nted 5am. 13,1914.

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H. CHSHBR.

NUT LOGK. 'APPLIGATI'ON FILED 1120.24, 1912.

19983,@ l 9; Patented Jan. 13, 1914.

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UNITED sTATEs PATENT oEEIoE.

HARRY CHESHER, 0F PHILADELPHIA, PENNSYLVANIA. l

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Specification of Letters Patent.

Patented Jan. 13. 1.914

Application led December 2451912. Serial No. 788,471.

To all whom it may concern .Be it known that I, HARRY CHESHER, acitizen4 of the United States, residing at Philadelphia, in the countyof Philadelphia and State of Pennsylvania, have inyented certain new anduseful Improvements in Nut-Locks, specication.

My invention relates to improvements in nut locks, the object of theinvention being to provide an improved construction of nut and improvedlocking means which absolutely prevent movement of the nut on the bolt,yet allow thel latter to be secured at -variouslongitudinal adjustmentson thebo-lt.

is adapted to permit adjustment of the nut relative to the Cotter andsecurely locked at any position of adjustment.

With these and other objects in. view, the invention consists in certainnovel features of construction and combinations and arrangements ofpartsas will be more fully hereinafter described and pointed out in theclaims.

In the accompanying drawings: Figure 1 is a view in elevation of a boltshowing my improved nut and .locking mechanism thereon in section, andalso showing a port-ion of the bolt in longitudinal section. Fig. 2 isan end view of the construction illustrated in Fig. l. Fig. 3 is aface-view of the nut .with the plate removed. Fig. 4 is a view inelevation of the bolt. Fig. 5 is a view in section on the line 5 -5 ofFig. 3. Fig. 6 is a view in section on the line 6-6 of Fig. 3. Fig. 7 isa perspective view ofthe plate 14. Fig. 8 is a view showing a bolt inelevation and a vnut in section illustrating a modification. Fig. 9 isan end view of the construction illustrated in Fig. 8. Fig. 10

is a view in section on the line 10-10 of' Fig. 8. Fig.' 11 is a viewsimilar to Fig. 9 illustrating another modification, and Figs.

12, 13, 14, and 15 are perspective views of various forms of lockingkeys.

of which ythe following is a` 1 represents a bolt provided at one endwith the ordinary head 2, and at its other end with screw-threads 3 toreceive my improved nut 4 screwed thereon. The nut 4 in its outer `faceis recessed or cutout around the bolt opening' forming a, series of lugs5. In the rectangular form of nut.-

illustrated, four of these lugs are provided at lthe corners of the nut,and the inner walls 6 of said lugs are straight and spaced from the boltopening. For clearness of descrip tion I shall hereinafter refer to theinner faces of the lugs'as walls, and that ortion of the nut betweensaidwalls and t e-bolt opening' as surfaces 7. By reference particularlyto Figs. 5 and 6, itkwill be seen that .i

the walls 6` are grooved longitudinally as shown at 8, the outer wallsof said grooves being inclined as shown at 9, while ythe surfaces 7 arestraight throughout a portion of their length as'indicated at 10 and areinclinedat one end as illustrated at 11. -This particular shape permitslocking keys to be positioned at different angles relative to the nutand bolt and be securely held in either position as will be more fullyhereinafter explained.

The lugs 6 are formed with outit'fardly` 'projecting studs 12 which arepreferably,

although not essentially, angular in form as indicated, and these studsare projected through openings 13 in a covering plate14,

the plate and the nut being preferably welded together, yet of course,the parts may be secured in other ways.

When the plate-is in position, ity holds the several lugs againstspreading movement. In other words, it prevents any possibility of thelugs being brokenor bent by' the wedging 'action of the keys hereinafter`referred to.

As indicated most clearly in Fig. 4, the

threads 3 of the ,bolt 1 may be' formed with grooves 15 which are atan.angle to "the threads, and these grooves l5 are arranged', in

all the other keys used, is of general Wedge shape as shovvn, and islocated in one ot the grooves 8 ofthe lug 5 and 'forced through one ofthe grooves 15 in the bolt, the outer end 19 of said key 18 beingpreferably bent back against the nut so as to prevent any possibility'of movement.

By reason of the length or Adepth of the lugs 5, it Will be seenthat-the cotter pin 17 may be projected through the opening 16 andsecurely hold the nut at various positions of: the nutI on the bolt.

llvlien the proper adjustment is had, the locking key 1S is forced int-oplace and there can be no further movement of the nut. Furthermore, thekey 18 prevents any possibility of vibration causing the nut to move onthe bolt or vice versa, and when used in connection with the cotter, thelock is secure and absolute.

Instead ot' employinga split key 18 such as shovvn in Figs. 1 and 2, lmight employ a key '2O Without this split. as indicated in Fig. 12, andI might employ as many of these keys 2O as desired, the several keyscrossing each other. A simple arrangement of keys is shown in Fig. 11,wherein l illustrate three of the keys 20, but the invention of courseis not limited to any particular number.

lnstead of providing the grooves 15 in the threads 3 of the bolt, l mayuse a self cutting key 21, one form of which is illustrated in Figs. 8,9, 10, and 15. This self cutting key 21 is provided with a sott metalmember brazed or otherwise secured to the main portion ot' the key andadapted to be bent back against the nut as indicated in Figs. 9 and 10.

The main portion of the key throughout one edge, and at both sides isformed with cutting teeth Q3 so that the key cuts its otvn Way throughthe threads of the bolt 'Without masning or jamming the threads.

l would have it understood that it is not my-intention to upset thethread, but to cut it so that the nut can be removed from the. bolt andnot be locked by reason ot jammed threads.

The ke ,Z1 is shoivn -as having a relatively fla, inner tace, but I mayemploy a cutting key 2l having a sharp cutting edge 25 as illustrated inFig. 13. In Fig. 1l I illustrate a key ,2E similar to key ill exceptthat the tlexible portion 2l is dispensed -vvith and the solid bar used.

lt vvill thus be noted that in connection insana@ with my improved nut`l may use various forms of key to lock the same to the bolt, and l mayuse keys which extend diagonally of the threads either in groovesalready provided. for them or cut by means of the key, and l may otcourse'provide other forms of wedges which position themselves betweenthe threads of the bolt and do not cut the same. Vl`he scoring orgrooving 9, 'together with the surfaces 10 and 11 in the nut permit ofthus locating the keys and by reason of such a construction of nut, I amenabled to resort to a Wide variation in the employment of the keys andcotter,and absolutely lock the nut on the bolt at any position ofadjustment.

Various slight changes might be made in the general form and arrangementof parts described Without departing from my invention, and hence 1 donot limit myself to the precise details set forth, but consider myselfat liberty to make such changes and alterations as; fairly fall Withinthe spirit and scope of the appended claims.

Having thus described my invention, vvhat l claim as new and desire tosecure by Letters Patent vis;

1. As a new article of manufacture, a nut having lugs on one face, saidlugs having fiat inner surfaces positioned at an angle to each other andhaving key receiving grooves therein adapted to Wedge between the saidlugs and the threads of a bolt in the nut,

substantially as described.

2. As a new article of manufacture, a nut having lugs on one tace, aplate secured tov said lugs, means adapted to bear against the lugs andlock the nut on a bolt, said nuthaving the inner Walls of its lugsscored or grooved, and said nut having its surfaces between the lugs andthe bolt opening straight throughout a portion of their length andinclined throughout another portion of their length, substantially asdescribed.

8. The combination with a bolt, a nut- ,on the. bolt having lugs on itsouter face, a plate secured to said lugs, and fixed to the. nut, and al( cking key located between one of the lugs and the bolt, and at anangle to the threads of the bolt, substantially as described.

ln testimony whereof l have signed my name to this specification in thepresence of tvvo subscribing witnesses.

HARRY CHESHER.

'Vitnesses:

R. H. K'RENKEL, Citas. E. Ports.

